Gas-burner.



0. K. EARLE 81: F. J. MADDEN.

Patented Feb. 23, 1915.

Z a 6 1 r i1 Jim um? 8 4 mu "MHII F O/A/er K. ar/e Frank .1 Madden Y THE/R ATTRNEYS HE NORRIS PETERS CO.. PHOTO-LITHO.. WASHINGTON. D. C

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otrvnn K. EARLE Ann FRANK J. ADDEN, or iyrrnnnaronrs, MINNESOTA, nssrenons 'ro Economy GAS VALVE oonrnnv, or MINNEAPOLIS, MINNESOTA, A CORPORA- rroivj or MI NESOTA.

GAS-BUBNER.

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Specification of Letters Patent.

Patented Feb. 23, 1915.

Application filed June 8, 1914. Serial No. 843,795.

To all whom, it may concern Be it known that we, OLIVER K. Eannn and Frank J. MADQEN, citizens of the United'States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Gas-Burners; and we do hereby declare the following to be a' full,

clear, and exact description of the invention, such as will enable others skilled in the art to which it 'appertains to make and use the same. 7

Our invention has for its object'to provide a simple and highly efiicient gas turnaadapted for general use in connection with heating apparatus, and is especiallyadapted for use" in connection with gas stoves, water heaters, urns and steam tables.

In experiments which we have made leading up to this invention, we have found that the greatest heating eificiency with a given amount of gas requires the following conditions; first, that a large number of very small individual flames must be employed and so arranged that the one flame will not blend into another, or, in other words,'will maintain its ownindividuality and heating action; second, that these individual flames, or in other words, the gas orificesthrough which the gas therefor is discharged, should be in approximately circular arrangement; and that the burner should have alarge central air passage around'which the individual flames are spaced, so that the individual flames. will not be caused to apex, that is, turn inward and blend in a common upwardly moving central column; third that in addition to the above noted'arrangement, which includes a central opening around which the gas discharge orifices are spaced, the properly adjusted." supply of air into the shank and burner. head must be provided,

so: that the gas will be properly mixed with from unconsumed carbon. Unconsumed carbon, as is well known, is what produces smoke and soot. The causes of the production of smoke and soot is generally caused, by. improper mixture of air and gas in the burner head, by an uneven delivery of gas through the various perforations of the burner, and by a bad arrangement of the perforations or gas discharge orifices, in respect to each other. It is very frequently caused by a lack of a proper free supply of air through theaXis of the burner.

In the" accompanying drawings which illustrate the invention in its preferred form, like characters indicate like parts throughout the several views.

Referring to the'drawings: Figure l is what will be designated as a front elevation of the burner with some parts broken away; Fig. 2 is a side elevation of. the burner with some parts sectioned;Fig. 3 is a plan view of theburner; Fig. at is a plan view of the so-called spud of the burner Fig. 5 is a section taken on the irregular line 0 on Fig. i. Fig. 6 is a side elevation of a modified form of the burner.

The burner head and shank are preferably cast integral and, of course, hollow. The head 1 is circular in plan view and the shank 2 is approximately Y-shaped with the stem of the Y depending. The said depending stem of the shank, in some instances will, however, be turned horizontally, as shown in Fig. 6. The prongs of the Y shaped shank join the sides of the head 1 at diametrically opposite points; and it is highly important to'note that the said head has a much greater cross section at the point of the junction with the branches of the said Y shank than it has at points ninety degrees distanttherefrom. This latter noted an rangement gives the hollow annular head a cross-section which is greatest at the points where the gas is delivered thereinto, and which gradually decreases in both directions to a point of minimum cross section located midway between the said points of maximum cross section. In its top, the head 1 isprovided with an evenly spaced circumferential row ofperforations or gas disment of a central column of air which prevents the several flames of the burner from apexing or drawing toward a center.

nular burner head having a constant internal cross section, because in such a burner the pressure will be greater immediately over the points of delivery of the gas into the burner head.

The lower or extended end of the stem of the Y-shaped shank 2 is formed With a diametrically atendedairinmke port that is adapted to be opened and closed to a greater or less extent, by a shutter 5 that is telescopically adjustable around the said stem, and as shown, is adapted to be held in different adjustments by means of a set screw 6.' Telescoped axially into the lower end of the said stem is a sleeve-like hub of a so-called spud 7, which, as shown, is removably held in position by a set screw 8. The upper end of the spud 7 is closed except for a plurality of small gas ports 9 located eccentric to the axis thereof, and circumferentially spaced. As shown, there are four of these ports 9, but this number may be increased or decreased, but in all cases, they will all be located outside of a valve seat 10 formed'on the interior of the upper head of the said spud. In this instance, the valve for cooperation with theseat 10 is formed von the annular upper end of the tubular shank 11 of a pipe connection 12. The said shank 11 is externally screwthreaded'and the said spud 7 is internally screw-threaded for engagement therewith, so that the valve-acting upper end 13 of the said shank may be engaged and disengaged with the said valve seat 10, and the said valve seat maybe spaced any desired distance therefrom, by rotary adjustments of the said spud. This provides a means either for positively closing or cutting 03 all of the ports 9 from the main gas supply, or for connecting the same by a passage of the desired size. It also provides means for delivering the gas from the spud in a plurality of small streams rather than in a single stream, and this very greatly increases the efficiency of the air and gas mixing action,

and consequently, of the combustion. The feature of providing the so-called spud of the burner with a plurality of circumferentially spaced gas discharge orifices, and providing the common valve engageable with the valve seat inward of the said gas ports, is thought to be new. In Figs. a and 5, these gas discharge orifices 9 are not only shown on a large scale, but are exaggerated in proportionate size. In fact, they are of much smaller diameter than the single axial passage usually employed in these gas spuds. The plurality of relatively small streams of gas much more rapidly and completely mix with the air taken in at the air ports 4, than will a relatively large single stream of gas, so that the gas and air are delivered to the burner head in a much more thoroughly mixed condition than with burners employing the single gas discharge orifices.

' The efficiency of the burner has been demonstrated in practice, and the statements above made, in respect to the operation thereof, are based on actual usage.

Wlatwoclunnt.

1. A gas burner having a hollow annular head with circumferentially spaced gas discharge orifices in its upper portion and having a shank with a plurality of legs which open into saidhead at diiferent circumferential points, the said head having an internal cross section that decreases in both directions circumferentially away from the said points of delivery thereinto of the legs of said shank.

2. A gas burner having a hollow annular head with circumferentially spaced gas discharge orifices in its top and having a Y- shaped gas delivery shank, the legs of which open into said head at diametrically opposite points, the said head having a cross section that decreases in both directions circumferentially away from the diametrically opposite points of delivery thereinto of the legs of said shank, and the space surrounded by said annular head being open for the free upward passage of a column of air.

8. In a gas burner, a hollow annular head having an axial air passage and provided with a circumferentially spaced series of discharge orifices in its top, and provided with a Y-shaped gas delivery shank, the legs of which open into said head at diametrically opposite points, the stem of which. depends therefrom, axially of said burner head, and which burner head has an internal cross section that decreases circumferentially in both directions from the points of delivery of the legs of said shank into said burner head.

4. A gas burner having a hollow annular head with circumferentially spaced gas discharge orifices in its upper portion, and

having a shank with a plurality of legs In testimony whereof We affix our signa- Which open into said head at difierent cirtures in presence of two Witnesses. cumferential points, the said head having OLIVER K EARLE an internal cross section that decreases in FRANK J ADDEIQI both directions circumferentially away from the said points of delivery thereinto of the Witnesses:

legs of said shank, the said parts being an B. G. WHEELER,

integral casting. HARRY D. KILGORE.

Gopiem of this patent may be obtained for five cents each, by addressing the Commissioner of Eatenta.

Washington, D. G. 

